io_uring: fix short read retries for non-reg files

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Sockets and other non-regular files may actually expect short reads to
happen, don't retry reads for them. Because non-reg files don't set
FMODE_BUF_RASYNC and so it won't do second/retry do_read, we can filter
out those cases after first do_read() attempt with ret>0.

Cc: stable@vger.kernel.org # 5.9+
Suggested-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2021-01-21 12:01:08 +00:00 • committed by Jens Axboe

parent 607ec89ed1

commit 9a173346bd

1 changed files with 1 additions and 1 deletions

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fs/io_uring.c

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